CN109047366A - A kind of automobile engine high-accuracy square Production for Steel Wire method - Google Patents
A kind of automobile engine high-accuracy square Production for Steel Wire method Download PDFInfo
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- CN109047366A CN109047366A CN201810585053.2A CN201810585053A CN109047366A CN 109047366 A CN109047366 A CN 109047366A CN 201810585053 A CN201810585053 A CN 201810585053A CN 109047366 A CN109047366 A CN 109047366A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
- B21C37/042—Manufacture of coated wire or bars
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/073—Metallic material containing MCrAl or MCrAlY alloys, where M is nickel, cobalt or iron, with or without non-metal elements
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/123—Spraying molten metal
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F17/00—Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metal Extraction Processes (AREA)
Abstract
The invention discloses a kind of automobile engine high-accuracy square Production for Steel Wire methods, the following steps are included: being detected by high-power microscope, tension test machine and analysis of chemical elements instrument to steel wire by the way that rubber-insulated wire lubrication, toughening and pickling line, drawing, thermal spraying, hardening and eddy current inspection line are removed the peel, gone to steel wire.The automobile engine that this project is researched and developed is higher than Europe and Japanese oil-temper spring steel wire material industry leading country with high-accuracy square steel wire production process technology.This technology has been rarely employed in Europe and Japan.According to the toughness index of high-accuracy square intensity of steel wire and steel wire, the present invention controls the total compression ratio of steel wire in 79%-80%；Steel wire produced by the invention can reach certain stress, and other mechanical performances to balance each other therewith, so that material still can have sufficiently high fatigue life in certain stress.It is that 200,000,000 5 thousands of times of spring works are not broken to product fatigue life requirements, firmer, toughness is more preferable, and bearing capacity is stronger.
Description
Technical field
The present invention relates to a kind of automobile engine high-accuracy square Production for Steel Wire method, belong to automobile engine with high-precision
Spend square wire technical field of producing.
Background technique
With the development of industry, as the springs of basic components using increasingly extensive, to spring compartment shape and at
The requirement of shape precision is also in the continuous improvement.In addition to circle, there are also rectangle, square and other irregular shapes in order to
This variation is coped with, it is aobvious to General Promotion world spring manufacturing industry level to develop advanced deformed spring with independent intellectual property rights
It obtains especially urgent and very necessary.As the requirement to spring compartment shape and forming accuracy constantly improves, automobile engine
It is particularly important with high-accuracy square steel wire production process technology.
By the research and development to automobile engine with high-accuracy square steel wire production process, is conducive to company and has grasped the type
The production technology of spring steel wire and the range of mold range of taper and total compression ratio, further consolidate our company in oil-temper bullet
The status of spring steel wire market leader, the leading oil-temper spring steel wire material of Persisting exploitation meet fast-developing Chinese state
The demand in interior market.
The meaning of the project development: on the one hand, meeting Chinese market demand, on the other hand, by using automobile engine
The research and development of high-accuracy square steel wire production process play great propulsion work for the development of domestic parts industry
With.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies of existing technologies, a kind of automobile engine is provided with high-precision
Square wire production method is spent, the structure of steel wire of the method for the present invention production is firmer, and toughness is more preferable, and bearing capacity is stronger.
In order to achieve the above objectives, the present invention provides a kind of automobile engine high-accuracy square Production for Steel Wire method, including
Following steps:
Coating is configured, coating is powdered；
Peeling: setting the running parameter of stripping glue machine, the length of thickness, stripping glue machine peeling including stripping glue machine peeling, stripping
The length of glue machine peeling presses the length of high-pressure rubber pipe sleeve, is gone by opening stripping glue machine work to the high-pressure rubber pipe shell of steel wire
Skin；
It goes rubber-insulated wire to lubricate: the physics film of nonmetallic coating is placed in zubzero temperature, steel wire is sent into nonmetallic coating
Reciprocating friction is lubricated steel wire in physics film, have steel wire surface with a thickness of 0.01-0.0018mm lubricating film；
The temperature of steel wire: being increased to the temperature of the austenitizing of steel by toughening and pickling line, and steel wire is passed through at least one
A coolant liquid curtain；The coolant liquid has the turbulent flow substantially vertical with the direction of travel of steel wire in the coolant liquid curtain, makes to reach
To the steel wire rapid cooling in liquid medium of the austenitizing temperature, and one is obtained below austenitic temperature and geneva
Cooling temperature more than body conversion temperature；It is maintained at the heat such as steel wire under pearlite conversion temperature, until conversion terminates；It will answer in advance
Power steel wire successively carries out pickling processes, phosphorating treatment and dry tack free processing with wire rod；
Drawing: steel wire is evenly pulled out from the die hole of wire drawing die under the action of pulling capacity, steel wire is during the drawing process
Cross section reduces length and increases；Then vacuum drying oven is heated to 290-390 degrees Celsius, enters back into quenching mechanism and carries out at quenching
Reason, hardening heat are 600-650 degrees Celsius, then steel wire is cooled to 59 DEG C or less by time 30S；
Thermal spraying: powder is heated to molten body, then by high-speed gas atomization at particle, and is ejected into steel wire
The surface deep forms firm coating, the thickness of spraying are as follows: then steel wire is sent into vacuum drying oven and is heated by 0.06mm, will
Pre- steel wire heating is to 600 DEG C；
Hardening: it is penetrated with 4 ms/min of speed from the import of glowing furnace after more steel wires are alternatively arranged；Secondly, make into
Enter the steel wire in the glowing furnace and pass sequentially through the first warm area, the second warm area and third warm area, the present invention can be first to
Cure process is carried out to more steel wires simultaneously under the same temperature curve that three-temperature-zone is constituted；
Eddy current inspection line: vortex is when being put into conductor in changing magnetic field, due to around changing magnetic field there is
The induced electric field of vortex, induced electric field, which acts on, leads on intracorporal free charge, makes charge movement, forms vortex；Steel wire is done
At coil shape, when will test coil close to steel wire, the surface induction of steel wire, which goes out, to be vortexed while generating opposite with magnetic field
Magnetic field, partial offset original magnetic field causes detection coil resistance and inductance to change, records related data；If metal works exist
Defect will change the intensity and distribution of vortex field, coil impedance made to change, and detecting the variation can determine whether zero defect；
Steel wire is detected by high-power microscope, tension test machine and analysis of chemical elements instrument.
Further, coating is configured, coating is powdered the following steps are included: coating is Aludirome powder, siderochrome
The mass percent of Al alloy powder are as follows: the ingredient ratio of iron is 1.2-3.1%, and the ingredient ratio of aluminium is 39-49%, the ingredient ratio of chromium
Ingredient ratio for 20-29%, strontium is 2.0-5.0%, and the ingredient ratio of sulphur is 0.10-0.64%, and the ingredient ratio of carbon is 0.19-
2.0%, the ingredient ratio of iron is 9-16%, and the ingredient ratio of manganese is 0.2-14%, and compound rare-earth: 2-5%, the sum of the above components are
100%；
In the compound rare-earth, include by weight percentage: the ingredient ratio of La is 30-35%, and the ingredient ratio of Y is 9-
The ingredient ratio of 20%, Sc are 9-20%, and the ingredient ratio of Gd is 2-8%, and the ingredient ratio of Sm is 4-9%, and the ingredient ratio of Dy is 4-
The ingredient ratio of 13%, Pr are 9-19%.
Further, pickling processes: the mixed liquor of sulfuric acid, nitric acid and hydrofluoric acid is poured into pickling tube, then puts steel wire
Enter pickling tube to be handled；Pickling tube selects glass steel material, and the structure of pickling tube is impervious barrier+erosion resistant coating+structural strength layer,
One impervious barrier and erosion resistant coating are at least 9 millimeters thick；Resin selects bisphenol-A epoxy vinylite, and pickling tube selects the special acid resin in sea
As inside lining anti-corrosive material.
Further, phosphorating treatment: steel wire is placed in and immerses phosphating solution (by Fe (H2PO4) 2Mn (H2PO4) 2Zn
(H2PO4) the acid dilute aqueous solution of 2 compositions, pH value 1-3, solution relative density are to deposit in 1.05-1.10 in steel wire surface
It forms one layer of crystal type phosphate not soluble in water and converts film.
Further, dry tack free is handled: being carried out to go dehydrogenation and moisture that steel wire need to be put into tunnel-type drying furnace
Low-temperature heat is dried, and general 260-300 DEG C of drying temperature, temperature is unsuitable excessively high, to prevent lubricating film failure；The steel wire of drying is borrowed
It helps trapeze to hang on trolley, through hoist engine or is manually fed into furnace.Every furnace can be packed into 10~12 trolleies.
Further, steel wire surface is observed by the mirror image analytical electron microscope of high-amplification-factor, detects it
It is whether qualified.
Further, the following parameter of machine testing steel wire: tensile strength, yield strength, elongation of having no progeny is tested by tension
Rate, the contraction percentage of area, elasticity modulus, Poisson's ratio, elongation strain hardenability value and strain hardening.
Further, the ingredient that steel wire is analyzed by analysis of chemical elements instrument, examines whether it meets production standard.
Advantageous effects of the invention:
The automobile engine that this project is researched and developed is returned with high-accuracy square steel wire production process technology than Europe and Japan's oil
Fiery spring steel wire material industry leading country is higher.This technology has been rarely employed in Europe and Japan.When this project is completed, it is contemplated that
Sales volume reaches 50 tons/year, realizes 5,000,000 yuan/year of income from sales, and profit reaches 1,000,000 yuan/year.Improve the performance of enterprises；
According to the toughness index of high-accuracy square intensity of steel wire and steel wire, the present invention controls the total compression ratio of steel wire and exists
79%-80% it；Steel wire produced by the invention can reach certain stress, and other mechanical performances to balance each other therewith, make
Obtaining material still can have sufficiently high fatigue life in certain stress.It is spring work to product fatigue life requirements
It is not broken to make 200,000,000 5 thousands of times, firmer, toughness is more preferable, and bearing capacity is stronger.
Specific embodiment
The invention will be further described below.Following embodiment is only used for clearly illustrating technical side of the invention
Case, and not intended to limit the protection scope of the present invention.
A kind of automobile engine high-accuracy square Production for Steel Wire method, comprising the following steps:
Coating is configured, coating is powdered；
Peeling: setting the running parameter of stripping glue machine, the length of thickness, stripping glue machine peeling including stripping glue machine peeling, stripping
The length of glue machine peeling presses the length of high-pressure rubber pipe sleeve, is gone by opening stripping glue machine work to the high-pressure rubber pipe shell of steel wire
Skin；
It goes rubber-insulated wire to lubricate: the physics film of nonmetallic coating is placed in zubzero temperature, steel wire is sent into nonmetallic coating
Reciprocating friction is lubricated steel wire in physics film, have steel wire surface with a thickness of 0.01-0.0018mm lubricating film；
The temperature of steel wire: being increased to the temperature of the austenitizing of steel by toughening and pickling line, and steel wire is passed through at least one
A coolant liquid curtain；The coolant liquid has the turbulent flow substantially vertical with the direction of travel of steel wire in the coolant liquid curtain, makes to reach
To the steel wire rapid cooling in liquid medium of the austenitizing temperature, and one is obtained below austenitic temperature and geneva
Cooling temperature more than body conversion temperature；It is maintained at the heat such as steel wire under pearlite conversion temperature, until conversion terminates；It will answer in advance
Power steel wire successively carries out pickling processes, phosphorating treatment and dry tack free processing with wire rod；
Drawing: steel wire is evenly pulled out from the die hole of wire drawing die under the action of pulling capacity, steel wire is during the drawing process
Cross section reduces length and increases；Then vacuum drying oven is heated to 290-390 degrees Celsius, enters back into quenching mechanism and carries out at quenching
Reason, hardening heat are 600-650 degrees Celsius, then steel wire is cooled to 59 DEG C or less by time 30S；
Thermal spraying: powder is heated to molten body, then by high-speed gas atomization at particle, and is ejected into steel wire
The surface deep forms firm coating, the thickness of spraying are as follows: then steel wire is sent into vacuum drying oven and is heated by 0.06mm, will
Pre- steel wire heating is to 600 DEG C；
Hardening: it is penetrated with 4 ms/min of speed from the import of glowing furnace after more steel wires are alternatively arranged；Secondly, make into
Enter the steel wire in the glowing furnace and pass sequentially through the first warm area, the second warm area and third warm area, the present invention can be first to
Cure process is carried out to more steel wires simultaneously under the same temperature curve that three-temperature-zone is constituted；
Eddy current inspection line: vortex is when being put into conductor in changing magnetic field, due to around changing magnetic field there is
The induced electric field of vortex, induced electric field, which acts on, leads on intracorporal free charge, makes charge movement, forms vortex；Steel wire is done
At coil shape, when will test coil close to steel wire, the surface induction of steel wire, which goes out, to be vortexed while generating opposite with magnetic field
Magnetic field, partial offset original magnetic field causes detection coil resistance and inductance to change, records related data；If metal works exist
Defect will change the intensity and distribution of vortex field, coil impedance made to change, and detecting the variation can determine whether zero defect；
Steel wire is detected by high-power microscope, tension test machine and analysis of chemical elements instrument.
Further, coating is configured, coating is powdered the following steps are included: coating is Aludirome powder, siderochrome
The mass percent of Al alloy powder are as follows: the ingredient ratio of iron is 1.2-3.1%, and the ingredient ratio of aluminium is 39-49%, the ingredient ratio of chromium
Ingredient ratio for 20-29%, strontium is 2.0-5.0%, and the ingredient ratio of sulphur is 0.10-0.64%, and the ingredient ratio of carbon is 0.19-
2.0%, the ingredient ratio of iron is 9-16%, and the ingredient ratio of manganese is 0.2-14%, and compound rare-earth: 2-5%, the sum of the above components are
100%；
In the compound rare-earth, include by weight percentage: the ingredient ratio of La is 30-35%, and the ingredient ratio of Y is 9-
The ingredient ratio of 20%, Sc are 9-20%, and the ingredient ratio of Gd is 2-8%, and the ingredient ratio of Sm is 4-9%, and the ingredient ratio of Dy is 4-
The ingredient ratio of 13%, Pr are 9-19%.
Further, pickling processes: the mixed liquor of sulfuric acid, nitric acid and hydrofluoric acid is poured into pickling tube, then puts steel wire
Enter pickling tube to be handled；Pickling tube selects glass steel material, and the structure of pickling tube is impervious barrier+erosion resistant coating+structural strength layer,
One impervious barrier and erosion resistant coating are at least 9 millimeters thick；Resin selects bisphenol-A epoxy vinylite, and pickling tube selects the special acid resin in sea
As inside lining anti-corrosive material.
Further, phosphorating treatment: steel wire is placed in and immerses phosphating solution (by Fe (H2PO4) 2Mn (H2PO4) 2Zn
(H2PO4) the acid dilute aqueous solution of 2 compositions, pH value 1-3, solution relative density are to deposit in 1.05-1.10 in steel wire surface
It forms one layer of crystal type phosphate not soluble in water and converts film.
Further, dry tack free is handled: being carried out to go dehydrogenation and moisture that steel wire need to be put into tunnel-type drying furnace
Low-temperature heat is dried, and general 260-300 DEG C of drying temperature, temperature is unsuitable excessively high, to prevent lubricating film failure；The steel wire of drying is borrowed
It helps trapeze to hang on trolley, through hoist engine or is manually fed into furnace.Every furnace can be packed into 10~12 trolleies.
Further, steel wire surface is observed by the mirror image analytical electron microscope of high-amplification-factor, detects it
It is whether qualified.
Further, the following parameter of machine testing steel wire: tensile strength, yield strength, elongation of having no progeny is tested by tension
Rate, the contraction percentage of area, elasticity modulus, Poisson's ratio, elongation strain hardenability value and strain hardening.
Further, the ingredient that steel wire is analyzed by analysis of chemical elements instrument, examines whether it meets production standard.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of automobile engine high-accuracy square Production for Steel Wire method, which comprises the following steps:
Coating is configured, coating is powdered；
Peeling: setting the running parameter of stripping glue machine, and the length of thickness, stripping glue machine peeling including stripping glue machine peeling shells glue machine
The length of peeling presses the length of high-pressure rubber pipe sleeve, is removed the peel by opening the work of stripping glue machine to the high-pressure rubber pipe shell of steel wire；
It goes rubber-insulated wire to lubricate: the physics film of nonmetallic coating is placed in zubzero temperature, steel wire is sent into the physics of nonmetallic coating
Reciprocating friction is lubricated steel wire in film, have steel wire surface with a thickness of 0.01-0.0018mm lubricating film；
The temperature of steel wire: being increased to the temperature of the austenitizing of steel by toughening and pickling line, and it is cold that steel wire is passed through at least one
But liquid curtain；The coolant liquid has the turbulent flow substantially vertical with the direction of travel of steel wire in the coolant liquid curtain, makes to reach institute
The steel wire of austenitizing temperature rapid cooling in liquid medium is stated, and obtains one and turns below austenitic temperature with martensite
Change the cooling temperature of temperature or more；It is maintained at the heat such as steel wire under pearlite conversion temperature, until conversion terminates；By prestress steel
Silk successively carries out pickling processes, phosphorating treatment and dry tack free processing with wire rod；
Drawing: steel wire is evenly pulled out from the die hole of wire drawing die under the action of pulling capacity, steel wire is cross-section during the drawing process
Face reduces length and increases；Then vacuum drying oven is heated to 290-390 degrees Celsius, enters back into quenching mechanism and is quenched,
Hardening heat is 600-650 degrees Celsius, then steel wire is cooled to 59 DEG C or less by time 30S；
Thermal spraying: being heated to molten body for powder, then by high-speed gas atomization at particle, and is ejected into steel wire deep table
Face forms firm coating, the thickness of spraying are as follows: then steel wire is sent into vacuum drying oven and is heated, by pre- steel wire by 0.06mm
It is heated to 600 DEG C；
Hardening: it is penetrated with 4 ms/min of speed from the import of glowing furnace after more steel wires are alternatively arranged；Secondly, making to enter institute
It states the steel wire in glowing furnace and passes sequentially through the first warm area, the second warm area and third warm area, the present invention can be first to third temperature
Cure process is carried out to more steel wires simultaneously under the same temperature curve that area is constituted；
Eddy current inspection line: vortex is when being put into conductor in changing magnetic field, since there is vortexs around changing magnetic field
Induced electric field, induced electric field, which acts on, leads on intracorporal free charge, makes charge movement, forms vortex；Steel wire is made into line
Loop-shaped, when will test coil close to steel wire, the surface induction of steel wire, which goes out, to be vortexed while generating the magnetic opposite with magnetic field
, partial offset original magnetic field causes detection coil resistance and inductance to change, records related data；If metal works existing defects,
The intensity and distribution of vortex field will be changed, coil impedance is made to change, detecting the variation can determine whether zero defect；
Steel wire is detected by high-power microscope, tension test machine and analysis of chemical elements instrument.
2. a kind of automobile engine according to claim 1 high-accuracy square Production for Steel Wire method, which is characterized in that match
Coating is set, coating is powdered the following steps are included: coating is Aludirome powder, the quality percentage of Aludirome powder
Than are as follows: the ingredient ratio of iron is 1.2-3.1%, and the ingredient ratio of aluminium is 39-49%, and the ingredient of chromium is than the ingredient ratio for 20-29%, strontium
For 2.0-5.0%, the ingredient ratio of sulphur is 0.10-0.64%, and the ingredient ratio of carbon is 0.19-2.0%, and the ingredient ratio of iron is 9-
16%, the ingredient ratio of manganese is 0.2-14%, and compound rare-earth: 2-5%, the sum of the above components are 100%；
In the compound rare-earth, include by weight percentage: the ingredient ratio of La is 30-35%, and the ingredient ratio of Y is 9-20%, Sc
Ingredient ratio be 9-20%, the ingredient ratio of Gd is 2-8%, and the ingredient ratio of Sm is 4-9%, and the ingredient ratio of Dy is 4-13%, Pr's
Ingredient ratio is 9-19%.
3. a kind of automobile engine according to claim 1 high-accuracy square Production for Steel Wire method, which is characterized in that acid
It washes processing: the mixed liquor of sulfuric acid, nitric acid and hydrofluoric acid being poured into pickling tube, steel wire is then put into pickling tube and is handled；Acid
Wash pool selects glass steel material, and the structure of pickling tube is impervious barrier+erosion resistant coating+structural strength layer, and an impervious barrier and erosion resistant coating are extremely
It is few 9 millimeters thick；Resin selects bisphenol-A epoxy vinylite, and pickling tube selects the special acid resin in sea as inside lining anti-corrosive material.
4. a kind of automobile engine according to claim 1 high-accuracy square Production for Steel Wire method, which is characterized in that phosphorus
Change processing: steel wire is placed in immersion phosphating solution, and (dilute acidic being made of Fe (H2PO4) 2Mn (H2PO4) 2Zn (H2PO4) 2 is water-soluble
Liquid, pH value 1-3, solution relative density are to deposit to form one layer of crystal type not soluble in water in steel wire surface in 1.05-1.10
Phosphate converts film.
5. a kind of automobile engine according to claim 1 high-accuracy square Production for Steel Wire method, which is characterized in that table
Face is dried: being dried, is dried to go dehydrogenation and moisture that steel wire need to be put into progress low-temperature heat in tunnel-type drying furnace
General 260-300 DEG C of temperature, temperature is unsuitable excessively high, to prevent lubricating film failure；The steel wire of drying is hung on trolley by trapeze, warp
Hoist engine is manually fed into furnace.Every furnace can be packed into 10~12 trolleies.
6. a kind of automobile engine according to claim 1 high-accuracy square Production for Steel Wire method, which is characterized in that logical
The mirror image analytical electron microscope for crossing high-amplification-factor is observed steel wire surface, whether qualified detects it.
7. a kind of automobile engine according to claim 1 high-accuracy square Production for Steel Wire method, which is characterized in that logical
Cross the following parameter of tension test machine testing steel wire: tensile strength, yield strength, elongation after fracture, the contraction percentage of area, springform
Amount, Poisson's ratio, elongation strain hardenability value and strain hardening.
8. a kind of automobile engine according to claim 1 high-accuracy square Production for Steel Wire method, which is characterized in that logical
The ingredient for crossing analysis of chemical elements instrument analysis steel wire, examines whether it meets production standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN110724795A (en) * | 2019-09-30 | 2020-01-24 | 江苏冠晟超导科技有限公司 | Isothermal quenching heat treatment process of steel wire for wire |
| CN114292996A (en) * | 2021-11-26 | 2022-04-08 | 铃木加普腾钢丝（苏州）有限公司 | Process for heat treatment of steel wire oxidation layer |
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| CN110724795A (en) * | 2019-09-30 | 2020-01-24 | 江苏冠晟超导科技有限公司 | Isothermal quenching heat treatment process of steel wire for wire |
| CN114292996A (en) * | 2021-11-26 | 2022-04-08 | 铃木加普腾钢丝（苏州）有限公司 | Process for heat treatment of steel wire oxidation layer |
| CN114292996B (en) * | 2021-11-26 | 2023-12-08 | 铃木加普腾钢丝（苏州）有限公司 | Process for heat treating steel wire oxide layer |
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